adding qr code output

src/main.rs

@@ -3,15 +3,15 @@
 #[macro_use] extern crate rocket_contrib;
 extern crate qrcode_generator;
 
-use rocket::http::RawStr;
-use rocket::response::Redirect;
 use rocket_contrib::templates::Template;
+use rocket_contrib::json::JsonValue;
 use rocket_contrib::serve::StaticFiles;
+use qrcode_generator::QrCodeEcc;
 use std::process::Command;
 
 fn genkey() -> String {
-    let output = Command::new("sh")
-        .args(&["-c", "wg", "genkey"])
+    let output = Command::new("wg")
+        .arg("genkey")
         .output()
         .expect("failed to execute process");
     let stdout = output.stdout;
@@ -26,9 +26,15 @@ fn index() -> String {
 }
 
 #[get("/new")]
-fn new_key() -> String {
+fn new_key() -> Template {
     let new_key = genkey();
-    new_key.to_string()
+    let qr_code: String = qrcode_generator::to_svg_to_string(new_key, QrCodeEcc::Low, 256, None)
+        .unwrap();
+    let qr_code: String = base64::encode(qr_code);
+    let context: JsonValue = json!({
+        "qr_code": qr_code,
+    });
+    Template::render("new", context)
 }
 
 #[catch(404)]

templates/new.html.tera

@@ -0,0 +1 @@
+<img src="data:image/svg+xml;base64,{{ qr_code }}" width=200 class="center">